- Samuel Langhorne Clemens is his real name.
- He was born on November 30, 1835.
- At age 12 his father died.
- He became a river pilot and Mark Twain came from river talk.
- Married Olivia Langdon and had three kids that died before age 20.
- By the end of his writing career he had written over 30 books.
- Mark also used Thomas Jefferson Snodgrass as another name.

- Irony - the use of words to convey a meaning that is the opposite of its literal meaning.

Jules Verne was another writer at the same time as mark and wrote Twenty Thousand Leagues Under the Sea.